EP 3616816 B1 20220105 - HOLE SAW AND DEVICE FOR CUTTING HOLE
Title (en)
HOLE SAW AND DEVICE FOR CUTTING HOLE
Title (de)
LOCHSÄGE UND VORRICHTUNG ZUM SCHNEIDEN VON LÖCHERN
Title (fr)
SCIE-CLOCHE ET DISPOSITIF DE DÉCOUPE DE TROU
Publication
Application
Priority
CN 201811010168 A 20180831
Abstract (en)
[origin: EP3616816A1] The present application provides a hole saw, and a device for cutting a hole. The hole saw (100) according to the present application has an axis (A), the hole saw (100) comprising: a cylindrical body (120); and multiple cutting teeth (110) disposed at a circumferential edge of the body (120), the multiple cutting teeth (110) comprising: inner sub-teeth (1121, 1125) offset towards the axis (A), outer sub-teeth (1122, 1124) offset away from the axis (A), and straight teeth (1123, 1126) which are not offset, wherein for 80% or more of the multiple cutting teeth (110), the ratio of the tooth depth (H) of the cutting tooth to the pitch (P) of the cutting tooth and the preceding cutting tooth thereof is in the range of 30% - 60%.
IPC 8 full level
B23D 61/02 (2006.01); B28D 1/04 (2006.01)
CPC (source: CN EP)
B23B 51/04 (2013.01 - CN); B23D 57/00 (2013.01 - CN); B23D 61/00 (2013.01 - CN); B23D 61/021 (2013.01 - EP); B28D 1/041 (2013.01 - EP)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3616816 A1 20200304; EP 3616816 B1 20220105; CN 110871295 A 20200310
DOCDB simple family (application)
EP 19191164 A 20190812; CN 201811010168 A 20180831